TEA BAGS
Posted: 11 Aug 2017, 06:32
TEA BAGS
This week's subject appeared from nowhere. Tea bags are so useful! I know the purists tell me that we should use loose tea because it's better quality but as an inveterate tea drinker I have to tell you that I can't tell the difference apart from the fact that if I use a spoon to measure the tea I probably use more and brew it stronger. I always have a pot of tea on the go and brew it in a pint pot. I call it engine house tea because just like my days as an engine tenter, I brew it and by the time I have finished it it's cold and that doesn't bother me a bit.
However, I'm certain that most of you use tea bags but how long is it since you had a close look at one? What's it made of? Why is it it doesn't fall to bits in the boiling water? I'll confess that I never asked these questions until by accident, all was revealed to me! Here's my tea bag story.....
At one time I worked for Rochdale Electric Welding on boiler repairs and commissioning. Much of our work was out on site and we learned many things about how industry worked. I could tell you some interesting stories about fat refining..... but back to the tea bags! We were working at a factory near Bolton repairing the boilers and when we had finished that I was put with one of my mates, who was an expert boilermaker, to labour for him replacing some very big rivets in the 'kiers' in the main works. I soon found out what a kier is. Its a very heavily made iron sphere about twenty feet in diameter that is supported on two massive trunnion bearings, one of which is hollow to admit high pressure steam to the vessel. They were built for dyeing cloth under pressure and were rotated to ensure that the dye penetrated the cloth, rather like an enormous washing machine drum. A lot of them had been scrapped but two long rows remained because some bright spark had realised that they were ideal for treating clean wood shavings with strong caustic at high temperature and pressure. This breaks the wood down into a porridge and pure cellulose can be extracted from it. This is what tea bags are made of! This is such a big market that the future of these lovely relics of the days of proper heavy engineering is assured. Incidentally I asked a very old boiler-maker how the inch thick plates were formed to the shape of the sphere and he said that in the old days it was done by hand by hammering the white hot metal on a former with 28lb sledge hammers. No wonder they drank a lot of beer.
So, next time you brew up have a good look at the tea bag and remember the supermen who made those kiers over a hundred years ago.
The cup that cheers!
This week's subject appeared from nowhere. Tea bags are so useful! I know the purists tell me that we should use loose tea because it's better quality but as an inveterate tea drinker I have to tell you that I can't tell the difference apart from the fact that if I use a spoon to measure the tea I probably use more and brew it stronger. I always have a pot of tea on the go and brew it in a pint pot. I call it engine house tea because just like my days as an engine tenter, I brew it and by the time I have finished it it's cold and that doesn't bother me a bit.
However, I'm certain that most of you use tea bags but how long is it since you had a close look at one? What's it made of? Why is it it doesn't fall to bits in the boiling water? I'll confess that I never asked these questions until by accident, all was revealed to me! Here's my tea bag story.....
At one time I worked for Rochdale Electric Welding on boiler repairs and commissioning. Much of our work was out on site and we learned many things about how industry worked. I could tell you some interesting stories about fat refining..... but back to the tea bags! We were working at a factory near Bolton repairing the boilers and when we had finished that I was put with one of my mates, who was an expert boilermaker, to labour for him replacing some very big rivets in the 'kiers' in the main works. I soon found out what a kier is. Its a very heavily made iron sphere about twenty feet in diameter that is supported on two massive trunnion bearings, one of which is hollow to admit high pressure steam to the vessel. They were built for dyeing cloth under pressure and were rotated to ensure that the dye penetrated the cloth, rather like an enormous washing machine drum. A lot of them had been scrapped but two long rows remained because some bright spark had realised that they were ideal for treating clean wood shavings with strong caustic at high temperature and pressure. This breaks the wood down into a porridge and pure cellulose can be extracted from it. This is what tea bags are made of! This is such a big market that the future of these lovely relics of the days of proper heavy engineering is assured. Incidentally I asked a very old boiler-maker how the inch thick plates were formed to the shape of the sphere and he said that in the old days it was done by hand by hammering the white hot metal on a former with 28lb sledge hammers. No wonder they drank a lot of beer.
So, next time you brew up have a good look at the tea bag and remember the supermen who made those kiers over a hundred years ago.
The cup that cheers!